Mandi! Alwin Antreich In chel di` si favelave... > I have to ask a more general question here, why are you putting the journal > on a RAID1?
For safety? > For better performance and less > complexity the journal should reside on standalone SSDs. With the RAID1 you > limit the speed of the journal, then it > would be better to reside the journal on the OSD disks itself. I know that. But i'm setting up a little ceph cluster, using as network backend only gigabit ethernet, so my bottleneck is mostly the 50GB/s of the network. Also, i cannot efford to buy a SSD for every OSD, and using the same SSD for many/all the OSD in the box is a big SPoF. So i'm using (software) raid1, confident enought that the penalty of the raid cannot impact so much overral. > > The proxmox correctly see the 4 OSD candidate disks, but does not see the > > journal partition. So i've used commandline: > pveceph is a wrapper around ceph tools and a dependency for pveceph is > smartmontools. So mdadm doesn't list smart > attributes and this might be why it's not seeing it. But this is more a guess > and should be verified by someone who > knows better. I suppose that. I'm a bit unconfident with the error/warning message printed ad the general behaviour. AFAI've understood, ceph can use for journal disks, partition and even files. Probably 'md' devices are nor partition nor disks, and ceph get confused. Would be better, for example, to simply put journal on files? Eg, format the md device, mount it and create inside the journal files? Thanks. -- dott. Marco Gaiarin GNUPG Key ID: 240A3D66 Associazione ``La Nostra Famiglia'' http://www.lanostrafamiglia.it/ Polo FVG - Via della Bontà , 7 - 33078 - San Vito al Tagliamento (PN) marco.gaiarin(at)lanostrafamiglia.it t +39-0434-842711 f +39-0434-842797 Dona il 5 PER MILLE a LA NOSTRA FAMIGLIA! http://www.lanostrafamiglia.it/25/index.php/component/k2/item/123 (cf 00307430132, categoria ONLUS oppure RICERCA SANITARIA) _______________________________________________ pve-user mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
